
package controller;

import dal.loadUserDoc;
import entity.user;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Vector;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


@WebServlet(name="checkLoginServlet", urlPatterns={"/checkLoginServlet"})

public class checkLoginServlet extends HttpServlet {
   
    protected void processRequest
            (HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
         try {
            String username = request.getParameter("txtUsername");
            String password = request.getParameter("txtPassword");
            user u = checkLogin(username, password);
            if (u == null) {
                response.sendRedirect("loginFail.jsp");
            } else if (u.getRole().equals("admin")) {
                response.sendRedirect("adminPage.jsp");
            } else {
                request.setAttribute("user", u);
                request.getRequestDispatcher("userInfo.jsp").
                                                forward(request, response);
            }
        } finally {
            out.close();
        }
    }

    public user checkLogin(String user, String pass) {
        Vector<user> users = new loadUserDoc().getUsers();
        for (user u : users) {
            if (user.equals(u.getUsername()) && pass.equals(u.getPassword())) {
                return u;
            }
        }
        return null;
    }

        // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
